Smelting-furnace.



,A. KOCH. SMELTIN G FURNACE. v APPLIUATQION FILED SEPT. Qll, 1907. 91 5,1 92, Patented Mar. 16, 1909.

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WWW/20w:

A; KOCH. SMELTING FURNACE.

v APPLICATION FILED SEPT. 11', 1907. I 91 5 1 92, Patented Mar. 16, 1909.

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AUGUST KOCH, OF HANOVER-LIST, GERMANY.

Y sMEL'rING-FURNAGE.

lid-916,192.

Specification bf Letters Patent.

Patented March 1c, 1909.

Application filed September 11, 1907. Serial No. 392,500-

To all whom it may concern:

Be it known that 1, AUGUST KooH, manufacturer of machinery, a subject of the Emperor of Germany, residing at Hanover-List, in the Empire of Germany, have invented new and useful Improvements in Smelting- Furnaces, of which the following is a fulL and clear specification.

My invention relates to smelting furnaces which are heated through oil combustion and,

in which the exhaust gases from the smelting chamber are used for the oil vaporization,

andpreliminarily heating the material for the, next smelting charge.

effectually vaporized, so that far higher' smelting temperatures maybe obtained and that consequently not only the smelting,

process is considerably accelerated but the consumption of fuel materially reduced.

A further novel feature is that the air-heating and oil vaporizing chamber can be arranged not inside the furnace only, but also between two or more smelting furnaces arg be tilted.

ranged so as to be stationary, to rotate or to In the accompanying drawing the furnace is illustrated in Figure 1 in front elevation,

tending thereof.

Between the two smelting chambers the air-heating and oil vaporizing chamber 0 is arranged in such a mannenthat in passing from the one smelting-chamber into the other, the hot exhaust gases must first pass through this chamber a. v I

In the chamber 0 the air-heating pipes it as well as the oil va orizing pipe 6 are arranged which branch 0 from the main gnpes f an 9 so that the heating of the air an the vaporizing of the oil for both smelting chambers takes place in the chamber 0. haust gases comin from the smeltingchamber a or b and. owing through the passage h or t directly enter the air-heating and oilevaporizing chamber, a before passing The hot 'eX- from the one smelting-chamber into the other a and in consequence of their high temperature effect a powerful heating of the air and an lntense vaporizing of the oil, so that with reduced consumption of fuel a continuous smelting flame of great power and intensity is obtained at the burner 7c. In this manner considerably higher smelting temperatures can be obtained and the smeltingprocess can be considerably accelerated with the same means. 'After passing through the chamber 0, the exhaust gases enter the second smelting-chamber and before issuing therefrom, serve for'prelimin'arily heating the material which is contained therein to be subsequently smelted.

Instead of two smelting-chambers, as in 'the exam le illustrated, any desired number.

of such 0 ambers may be arranged one behind the other or adj acently to one another. The device'for tilting or rotating the smelting-chambers may likewise be of any kind preferred. I

What I claim is: r

1. An oil heated smelting furnace comprisingalurality of chambers adapted to operate a ternately as smelting or as pre-,

liminary heating chambers, and a fuel vaporizing and air heating compartment, all of said chambers connected with each other and with said compartment to cause the hot gases to pass first throu h the sme ting chamber, 'then through t e heating compartment, and thence through the chamber for heating the material to be subsequently smelted in said chamber.

2. An oil heated smelting furnace comprising a plurality ofrotatable chambers adapted to operate alternately as smelting or as preliminary heating chambers, and a heating chamber for the material 17%) be subfuel vaporizing and air heating c0mpart se uently smelted. g 10 ment connecting said smelting and said pre- 11 witness whereof I have hereunto set liminary heating chambers causing the com- .my hand inFthe presence of two witnesses. bustion gases to first pass directly from said i AUGUST KOCH; smelting chamber into said heating com- Witnesses: a partment, and thence directly to the other M. L. THOMPSON, chamber used at the time as preliminary, RoBnR'r-v. BI'TLOW; 

